Yamaha 96 150hp overheat alarm

[fsujack21]

I have a 1996 Yamaha 150hp carbed motor. Went out for a ride last night and on my way in the overheat alarm sounded. I shut it down right away and let it cool off for 45 min. I tilted up the motor and saw the intake was clogged with seaweed/slipgut. I removed the clog and fired it up after the block was cool enough to keep my hand on it. She ran fine and the water out of the pee-hole was cool. I kept it under 2k rpms with the cover off and got back in ok. I am planning on doing a compression test this weekend. I did one two weeks ago and it was perfect on all cylinders.

My question is if compression comes back ok and I continue to get good temp and flow out of the pee-hole is there any necessary repairs I should make now? ie stats, gaskets, water pump?

 

[fsujack21]

Re: Yamaha 96 150hp overheat alarm

Any ideas? Searched all over this site and can't find the answer. I'm afraid of doing further damage. Any help would be appreciated Thx

 

[rodbolt]

Re: Yamaha 96 150hp overheat alarm

depends on if the pump ran dry or was just restricted but had enough water to keep the impeller and housing cool.

 

[99yam40]

Re: Yamaha 96 150hp overheat alarm

I agree, it all depends on how much blockage there was.
Pull the pump and inspect/ replace as needed. Make sure you inspect the pump housing real well. I have seen a 35 hp Johnson melt the impeller into a small blob from sea weed and housing warped real bad

 

[fsujack21]

Re: Yamaha 96 150hp overheat alarm

Thanks guys. Thats the kind of info I was hoping to get.